Key Phrase:

to have your hand in the till = 盗用(挪用)公款

Thanks to Erick for the translation of the key phrase!

Example conversation:

A: Gosh! Did you know (that) Fred in Minneapolis was caught with his hand in the till?

B: Really? How much money did he get?

A: I think he stole over US$1,000,000 over 20 years.

B: Wow! He sure knows how to keep his hand in the till!